Finding the Fourth Proportional to 72,944.28, 109,372.61 and 28,518.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,944.28 : 109,372.61 = 28,518.10 : x
2. Step 2: Convert to fraction form
   72,944.28/109,372.61 = 28,518.10/x
3. Step 3: Cross multiply
   72,944.28x = 109,372.61 × 28,518.10
4. Step 4: Simplify right side
   72,944.28x = 3,119,098,827.10
5. Step 5: Solve for x
   x = 3,119,098,827.10/72,944.28
6. Step 6: Final answer
   x = 42,760.02